And to mention this is a natural outcome. It happens without birth control all the time, so it has nothing to do with birth control at all. The uterus isn’t exactly a “safe and cozy place” as some people think it is, it can expell anything any time and can make the environment hostile for sperms and embryos out of control. Birth control just happens to help to control periods and ovulations and helps with the uterus to be more challenging than before for sperms and fertilized embryos to invade. A start to a new life is never easy, you gotta fight for life. Literally. And that’s what women wants when taking birth control, so they doesn’t get invaded by sperms attaching to their egg without their knowledge haha